\(\sqrt{2}\) के प्रमाण में \(x^2=2y^2\) से सीधे (y) सम लिखने का मूल्यांकन क्या है?
In the proof of \(\sqrt{2}\), what is the evaluation of directly writing (y) is even from \(x^2=2y^2\)?
Explanation opens after your attempt
Correct Answer
A. अधूरा है; पहले (x) सम और (x=2r) सिद्ध करना होगाIt is incomplete; first (x) even and (x=2r) must be proved
Concept
\(x^2=2y^2\) does not directly give (y) even. After putting (x=2r), \(y^2=2r^2\) is obtained.
Why this answer is correct
The correct answer is A. अधूरा है; पहले (x) सम और (x=2r) सिद्ध करना होगा / It is incomplete; first (x) even and (x=2r) must be proved. \(x^2=2y^2\) does not directly give (y) even. After putting (x=2r), \(y^2=2r^2\) is obtained.
Exam Tip
\(x^2=2y^2\) से सीधे (y) सम नहीं निकलता। (x=2r) रखने के बाद \(y^2=2r^2\) मिलता है।
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